Ok Build is amd x6 1090t 8 gigs ram 4 hard drives sound card currently 260gtx going 560 or 570 soon will be overclocking. Ive been looking around and found cheap 800W tempting but know they are crap so really looking for two anwsers here what wattage and what recommended power supplys by model (Subjective I know)
500W would definitely be enough for a system with one GTX 560/570.
Another unit worth considering is the Antec HCG-520.
SLI GTX 560s can easily be done on a good 650W PSU, try to choose one that has four PCIe connectors, unless you are happy to use peripheral to PCIe adapters. There aren't that many 650W PSUs with four PCIe connectors around at good prices at the moment tho.